Integrated Algebra - June 2010

**PART IV**

38 The diagram below shows a cumulative frequency histogram
of the students’ test scores in

Ms. Wedow’s algebra class.

Determine the total number of students in the class.

Determine how many students scored higher than 70.

State which ten-point interval contains the median.

State which two ten-point intervals contain the same frequency.

39 On the set of axes below, solve the following system of
equations graphically for all values of x and y.

y = -x^{2 }- 4x + 12

y = -2x + 4

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